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<span> cellular respiration cannot occur without photosynthesis</span>
It appears that some of the answer choices got cut off in the image. In any case, thermal energy would flow from a higher-temperature cube to a lower-temperature cube.
So the correct answer should be among the following formulations:
Cube #1 to Cube #3
Cube #2 to Cube #1
Cube #2 to Cube #4
Cube #4 to Cube #3.
Explanation:
Water splitting is the chemical reaction in which water is broken down into oxygen and hydrogen: 2 H2O → 2 H2 + O. Efficient and economical photochemical water splitting would be a technological breakthrough that could underpin a hydrogen economy.
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